1 It adopts intellegient structure,c type single arm frame structure,has the feature such as good reliable,simple structure and easy operation.2 The frame is entirely welded with steel plates and treated to relive stress by tempering.3 Cartridge valve equipped for hydraulic control system,reliable,durable and less hydraulic shock,shorter connection pipeline and dewer release points.4 Hydraulic system adopts pressure pre-release device, low impact of hydraulic pressure.5 Independent electrical control,reliable,audio-visual and convenient for mainenance.6 Centralized button control system,with adjustment,hand and semi-auto operation modes at operator's choice(semi-automatic has two type tech:set-stroke single and set-presser single).7 The operating force,no-load traveling and,low-spend movement and travel range can be adjusted subject to technological requirements